This is a set of Ford Autolite marked BF 32 spark plugs which are correct for all Ford high performance engines  for the years of 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970.  This includes, but is not limited to the Cobra Jet engines and the HIPO 289 engines.   They are NOS and  have never been installed.  Ford has not made this style of Autolite spark plug since about 1969.  You will receive all 8 spark plugs for one price.   Very rare and desirable so don't wait to purchase or you might just miss out.  Please note that these are not the newer version marked Motorcraft Autolite, but the correct original style marked just Autolite.